Deepseek-Lite (#184)

* Quantization mixes tweaks

* Make iq4_nl_r4 work with row size that are not a multiple of 128

... on Zen4

* Make iq4_nl_r4 work with row size that are not a multiple of 128

... on AVX2

* Make iq4_nl_r4 work with row size that are not a multiple of 128

... on AVX2

* Make q6_0_w4 work with row size that are not a multiple of 128

... on Zen4

* Make q6_0_w4 work with row size that are not a multiple of 128

... on Zen4

* Make q5_0_r4 work with row size that are not a multiple of 128

... on Zen4 and AVX2

* Make q5,6_0_r4, iq4_nl_e4 work with row size that are not a multiple of 128

also on NEON.

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Co-authored-by: Iwan Kawrakow <[email protected]>

Author: ikawrakow